Driving with hands free headset covering both ears?

I have a very comfortable headset with microphone (AKG K551) for making calls and listen to music, the problem is that is covering my both ears. I was searching the www.FMCSA.dot.gov for regulation about this, but the only thing mention is hands free device for your cellphone.

During my small experience like CDL driver (6 years), I found that the only way keeping me concentrate on the road and awake is listening to a music wearing headset. I am talking about this early morning deliveries like 2:00 or 3:00 AM in the morning and you have to drive night time. Before headsets, I was drinking a lot of coffee, eating chocolate, popcorn, but in the moment I stop consuming - effect disappears.

My question is: Is it legal to wear hands free headset covering both ears when operating a CMV? Please give me a link to the federal regulation that prohibits it.

All the fire truck drivers are wearing a pilot style communication headsets covering both ears, at least in my state, why the truck drivers can not?

 

I am only talking about night time driving on interstate, probably you going to see the emergency vehicle lights long before you hear it. Major air leaks will show on you dash.

 

Yes I can hear if I blow a tire or something.....

 

How much is the ticket? At least to know what I am risking.

 

Good for Who?